Optimize SkTileImageFilter destination bitmap size.

src/effects/SkTileImageFilter.cpp

Index: src/effects/SkTileImageFilter.cpp
diff --git a/src/effects/SkTileImageFilter.cpp b/src/effects/SkTileImageFilter.cpp
index 8ef617d520f96dfc05c77a3d3b67dc02fdbc1b23..8d158013879a7bf23097c75a2ce241f49816bad6 100644
--- a/src/effects/SkTileImageFilter.cpp
+++ b/src/effects/SkTileImageFilter.cpp
@@ -35,6 +35,12 @@ bool SkTileImageFilter::onFilterImage(Proxy* proxy, const SkBitmap& src,
 
     SkRect dstRect;
     ctx.ctm().mapRect(&dstRect, fDstRect);
+#ifndef SK_DISABLE_TILE_IMAGE_FILTER_DEST_OPTIMIZATION
+    if (!dstRect.intersect(SkRect::Make(ctx.clipBounds()))) {
+        offset->fX = offset->fY = 0;
+        return true;
+    }
+#endif
     const SkIRect dstIRect = dstRect.roundOut();
     int w = dstIRect.width();
     int h = dstIRect.height();